| side | (noun) an extended outer surface of an object | - |
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| (noun) either the left or right half of a body | - |
| (noun) an aspect of something (as contrasted with some other implied aspect) | - |
| (noun) an opinion that is held in opposition to another in an argument or dispute | Synonyms: position |
| (noun) (sports) the spin given to a ball by striking it on one side or releasing it with a sharp twist | Synonyms: English |
| (noun) a lengthwise dressed half of an animal's carcass used for food | Synonyms: side of meat |
| (noun) one of two or more contesting groups | - |
| (noun) a family line of descent | - |
| (noun) a surface forming part of the outside of an object | Synonyms: face |
| (noun) a line segment forming part of the perimeter of a plane figure | - |
| (noun) a place within a region identified relative to a center or reference location | - |
| (noun) an elevated geological formation | Synonyms: incline, slope |
| sidebar | (noun) (law) a courtroom conference between the lawyers and the judge that is held out of the jury's hearing | - |
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| (noun) a short news story presenting sidelights on a major story | - |
| sideboard | (noun) a piece of furniture that stands at the side of a dining room; has shelves and drawers | Synonyms: buffet, counter |
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| (noun) a board that forms part of the side of a bed or crib | - |
| (noun) a removable board fitted on the side of a wagon to increase its capacity | - |
| sideboob | (noun) A breast exposed from the side | - |
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| sideburn | (noun) facial hair that has grown down the side of a man's face in front of the ears (especially when the rest of the beard is shaved off) | Synonyms: burnside, mutton chop, side-whiskers |
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| sidecar | (noun) conveyance consisting of a small carrier attached to the side of a motorcycle | - |
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| (noun) a cocktail made of orange liqueur with lemon juice and brandy | - |
| sidekick | (noun) a close friend who accompanies his buddies in their activities | Synonyms: brother, buddy, chum, crony, pal |
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| sidelight | (noun) light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow | Synonyms: running light |
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| sideline | (noun) an auxiliary activity | Synonyms: avocation, by-line, hobby, pursuit, spare-time activity |
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| (noun) an auxiliary line of merchandise | - |
| (noun) a line that marks the side boundary of a playing field | Synonyms: out of bounds |
| siderite | (noun) a meteorite consisting principally of nickel and iron | - |
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| (noun) iron ore in the form of ferrous carbonate | Synonyms: chalybite |
| sideroblast | (noun) an erythroblast having granules of ferritin | - |
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| siderocyte | (noun) an abnormal red blood cell containing granules of iron not bound in hemoglobin | - |
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| sideropenia | (noun) a deficiency of iron; results from inadequate iron in the diet or from hemorrhage | - |
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| siderophilin | (noun) a globulin in blood plasma that carries iron | Synonyms: beta globulin, transferrin |
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| siderosis | (noun) fibrosis of the lung caused by iron dust; occurs among welders and other metal workers | - |
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| sidesaddle | (noun) a saddle for a woman; rider sits with both feet on the same side of the horse | - |
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| sideshow | (noun) a minor show that is part of a larger one (as at the circus) | - |
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| (noun) a subordinate incident of little importance relative to the main event | - |
| sideslip | (noun) an unexpected slide | Synonyms: skid, slip |
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| (noun) a flight maneuver; aircraft slides sideways in the air | Synonyms: slip |
| sidesman | (noun) (Church of England) an assistant to the churchwarden; collects offerings of money in the church | - |
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| sidesplitter | (noun) a joke that seems extremely funny | Synonyms: belly laugh, howler, riot, scream, thigh-slapper, wow |
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| sidestep | (noun) a step to one side (as in boxing or dancing) | - |
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| sidestroke | (noun) a swimming stroke in which the arms move forward and backward while the legs do a scissors kick | - |
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| sideswipe | (noun) a glancing blow from or on the side of something (especially motor vehicles) | - |
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| sidetrack | (noun) a short stretch of railroad track used to store rolling stock or enable trains on the same line to pass | Synonyms: railroad siding, siding, turnout |
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| sidewalk | (noun) walk consisting of a paved area for pedestrians; usually beside a street or roadway | Synonyms: pavement |
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| sidewall | (noun) a wall that forms the side of a structure | - |
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| (noun) the side of an automobile tire | - |
| sidewinder | (noun) small pale-colored desert rattlesnake of southwestern United States; body moves in an s-shaped curve | Synonyms: Crotalus cerastes, horned rattlesnake |
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| (noun) air-to-air missile with infrared homing device | - |
| sigmoidectomy | (noun) surgical removal of part or all of the sigmoid colon (usually to remove a malignant tumor) | - |
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| silicide | (noun) any of various compounds of silicon with a more electropositive element or radical | - |
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| silverside | (noun) small fishes having a silver stripe along each side; abundant along the Atlantic coast of the United States | Synonyms: silversides |
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| silversides | (noun) small fishes having a silver stripe along each side; abundant along the Atlantic coast of the United States | Synonyms: silverside |
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| (noun) the common North American shiner | Synonyms: common shiner, Notropis cornutus |
| slide | (noun) the act of moving smoothly along a surface while remaining in contact with it | Synonyms: coast, glide |
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| (noun) sloping channel through which things can descend | Synonyms: chute, slideway, sloping trough |
| (noun) a transparency mounted in a frame; viewed with a slide projector | Synonyms: lantern slide |
| (noun) a small flat rectangular piece of glass on which specimens can be mounted for microscopic study | Synonyms: microscope slide |
| (noun) plaything consisting of a sloping chute down which children can slide | Synonyms: playground slide, sliding board |
| (noun) (music) rapid sliding up or down the musical scale | Synonyms: swoop |
| (noun) (geology) the descent of a large mass of earth or rocks or snow etc. | - |
| slider | (noun) a fastball that curves slightly away from the side from which it was thrown | - |
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| (noun) freshwater turtle of United States and South America; frequently raised commercially; some young sold as pets | Synonyms: Pseudemys scripta, yellow-bellied terrapin |
| (noun) someone who races the luge | Synonyms: luger |
| (noun) a person who slips or slides because of loss of traction | Synonyms: skidder, slipper |
| slideway | (noun) sloping channel through which things can descend | Synonyms: chute, slide, sloping trough |
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| sobersides | (noun) a serious and sedate individual | - |
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| spermatocide | (noun) a contraceptive agent that kills spermatozoa | Synonyms: spermicide |
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| spermicide | (noun) a contraceptive agent that kills spermatozoa | Synonyms: spermatocide |
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| spider | (noun) predatory arachnid with eight legs, two poison fangs, two feelers, and usually two silk-spinning organs at the back end of the body; they spin silk to make cocoons for eggs or traps for prey | - |
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| (noun) a skillet made of cast iron | - |
| (noun) a computer program that prowls the internet looking for publicly accessible resources that can be added to a database; the database can then be searched with a search engine | Synonyms: wanderer |
| spiderflower | (noun) any of various often strong-smelling plants of the genus Cleome having showy spider-shaped flowers | Synonyms: cleome |
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| spiderwort | (noun) any plant of the family Commelinaceae | Synonyms: dayflower |
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| springtide | (noun) a greater than average tide occurring during the new and full moons | - |
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| (noun) a swelling rush of anything | - |
| stride | (noun) a step in walking or running | Synonyms: pace, tread |
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| (noun) significant progress (especially in the phrase `make strides') | - |
| (noun) the distance covered by a step | Synonyms: footstep, pace, step |
| stridence | (noun) having the timbre of a loud high-pitched sound | Synonyms: shrillness, stridency |
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| stridency | (noun) having the timbre of a loud high-pitched sound | Synonyms: shrillness, stridence |
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| strider | (noun) a person who walks rapidly with long steps | - |
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| subdivider | (noun) someone who divides parts into smaller parts (especially a divider of land into building sites) | - |
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| subsidence | (noun) a gradual sinking to a lower level | Synonyms: settling, subsiding |
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| (noun) the sudden collapse of something into a hollow beneath it | Synonyms: cave in |
| (noun) an abatement in intensity or degree (as in the manifestations of a disease) | Synonyms: remission, remittal |
| suicide | (noun) the act of killing yourself | Synonyms: self-annihilation, self-destruction |
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| (noun) a person who kills himself intentionally | Synonyms: felo-de-se |
| sulfacetamide | (noun) a topical sulfonamide (trade name Sulamyd) used to treat eye infections | Synonyms: Sulamyd |
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| sulfanilamide | (noun) a white odorless crystalline sulfa drug; the parent compound of most of the sulfa drugs | - |
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| sulfide | (noun) a compound of sulphur and some other element that is more electropositive | Synonyms: sulphide |
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| sulfonamide | (noun) antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA | Synonyms: sulfa, sulfa drug, sulpha |
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| sulphide | (noun) a compound of sulphur and some other element that is more electropositive | Synonyms: sulfide |
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| superoxide | (noun) the univalent anion O2- | Synonyms: superoxide anion |
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| (noun) a metallic oxide containing the univalent anion O2- | - |
| taxidermist | (noun) a craftsman who stuffs and mounts the skins of animals for display | Synonyms: animal stuffer, stuffer |
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| taxidermy | (noun) the art of mounting the skins of animals so that they have lifelike appearance | - |
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| telluride | (noun) any binary compound of tellurium with other more electropositive elements | - |
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| tetrachloride | (noun) any compound that contains four chlorine atoms per molecule | - |
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| tetrahalide | (noun) any halide containing four halogen atoms in its molecules | - |
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| tetrasaccharide | (noun) any of a variety of carbohydrates that yield four monosaccharide molecules on complete hydrolysis | - |
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| tetroxide | (noun) an oxide containing four atoms of oxygen in the molecule | - |
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| thalidomide | (noun) a sedative and hypnotic drug; withdrawn from sale after discovered to cause severe birth defects because it inhibits angiogenesis | - |
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| thiazide | (noun) any of a group of drugs commonly used as diuretics in the treatment of hypertension; they block the reabsorption of sodium in the kidneys | - |
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| thyroidectomy | (noun) surgical removal of the thyroid gland | - |
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| tide | (noun) the periodic rise and fall of the sea level under the gravitational pull of the moon | - |
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| (noun) something that may increase or decrease (like the tides of the sea) | - |
| (noun) there are usually two high and two low tides each day | Synonyms: lunar time period |
| tideland | (noun) land near the sea that is overflowed by the tide | - |
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| tidemark | (noun) indicator consisting of a line at the highwater or low-water limits of the tides | - |
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| tidewater | (noun) low-lying coastal land drained by tidal streams | - |
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| tideway | (noun) a channel in which a tidal current runs | - |
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| tocainide | (noun) antiarrhythmic drug (trade name Tonocard) used to treat ventricular arrhythmias when less dangerous drugs have failed | Synonyms: Tonocard |
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| tolazamide | (noun) a drug (trade name Tolinase) used in treating stable adult-onset diabetes mellitus | Synonyms: Tolinase |
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| tolbutamide | (noun) sulfonylurea; an oral antidiabetic drug (trade name Orinase) used in the treatment of adult-onset diabetes mellitus | Synonyms: Orinase |
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| topside | (noun) (usually plural) weather deck; the part of a ship's hull that is above the waterline | - |
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| transactinide | (noun) any of the artificially produced elements with atomic numbers greater than 103 | - |
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| trichloride | (noun) any compound containing three chlorine atoms in each molecule | - |
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| trichlormethiazide | (noun) diuretic drug (trade name Naqua) used to treat hypertension | Synonyms: Naqua |
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| trident | (noun) a spear with three prongs | - |
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| triglyceride | (noun) glyceride occurring naturally in animal and vegetable tissues; it consists of three individual fatty acids bound together in a single large molecule; an important energy source forming much of the fat stored by the body | - |
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| trioxide | (noun) an oxide containing three atoms of oxygen in the molecule | - |
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| trisaccharide | (noun) any of a variety of carbohydrates that yield three monosaccharide molecules on complete hydrolysis | - |
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| triskaidekaphobia | (noun) a morbid fear of the number 13 | - |
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| tyrannicide | (noun) killing a tyrant | - |
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| underside | (noun) the lower side of anything | Synonyms: bottom, undersurface |
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| undertide | (noun) a current below the surface of a fluid | Synonyms: undercurrent |
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| upbraider | (noun) someone who finds fault or imputes blame | Synonyms: rebuker, reproacher, reprover |
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| upside | (noun) the highest or uppermost side of anything | Synonyms: top, top side, upper side |
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| ureide | (noun) any compound, of general formula R-CO-NH-CO-NH2 or R-CO-NH-CO-NH-CO-R', formally derived by the acylation of urea. | - |
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| uxoricide | (noun) the murder of a wife by her husband | - |
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| (noun) a husband who murders his wife | - |
| vermicide | (noun) an agent that kills worms (especially those in the intestines) | - |
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| video | (noun) a recording of both the visual and audible components (especially one containing a recording of a movie or television program) | Synonyms: video recording |
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| (noun) the visible part of a television transmission | Synonyms: picture |
| (noun) broadcasting visual images of stationary or moving objects | Synonyms: telecasting, television, TV |
| (noun) (computer science) the appearance of text and graphics on a video display | - |
| videocassette | (noun) a cassette for videotape | - |
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| videodisc | (noun) a digital recording (as of a movie) on an optical disk that can be played on a computer or a television set | Synonyms: DVD, videodisk |
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| videodisk | (noun) a digital recording (as of a movie) on an optical disk that can be played on a computer or a television set | Synonyms: DVD, videodisc |
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| videotape | (noun) a relatively wide magnetic tape for use in recording visual images and associated sound | - |
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| (noun) a video recording made on magnetic tape | - |
| viricide | (noun) an agent (physical or chemical) that inactivates or destroys viruses | Synonyms: virucide |
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| virucide | (noun) an agent (physical or chemical) that inactivates or destroys viruses | Synonyms: viricide |
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| voider | (noun) a hamper that holds dirty clothes to be washed or wet clothes to be dried | Synonyms: clothes basket, clothes hamper, laundry basket |
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| (noun) a piece of chain mail covering a place unprotected by armor plate | Synonyms: gusset |
| (noun) an official who can invalidate or nullify | Synonyms: invalidator, nullifier |
| (noun) a person who defecates | Synonyms: defecator, shitter |
| waterside | (noun) land bordering a body of water | - |
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| waveguide | (noun) a hollow metal conductor that provides a path to guide microwaves; used in radar | Synonyms: wave guide |
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| wayside | (noun) edge of a way or road or path | Synonyms: roadside |
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